* {
  margin: 0;
}
.panel-word-card {
  position: relative;
  height: 390px;
  width: 620px;
  text-align: center;
  box-shadow: 0 4px 8px 0 rgb(0 0 0 / 20%), 0 6px 20px 0 rgb(0 0 0 / 19%);
}
.panel-word {
  background-color: #4caf50;
  color: ghostwhite;
  font-size: 40px;
  padding: 10px;
}
.panel-operate {
  padding: 10px;
}
input {
  width: 85%;
  height: 2.5em;
  border-radius: 0.5em;
  border-color: #4caf50;
  text-align: center;
}

button {
  height: 4em;
  width: 4em;
  border: transparent;
  background-color: transparent;
  margin: 1em;
  cursor: pointer;
  font-size: 1em;
}

.btn-success {
  background-image: url("success.png");
  background-size: 4em;
}
.btn-error {
  background-image: url("error.png");
  background-size: 4em;
}
.btn-save {
  background-image: url("save.png");
  background-size: 4em;
}
.panel-state {
  position: absolute;
  bottom: 0px;
  width: 100%;
  text-align: center;
}
.panel-state input {
  font-size: 0.5em;
  width: 2em;
  height: 2em;
}

.infor-error {
  color: red;
}
.infor-success {
  color: green;
}
.infor-warning {
  color: orange;
}
